package com.itheima.sh.controller;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.List;
import java.util.Map;

@RestController
@RequestMapping("consumer")
@EnableDiscoveryClient
public class ConsumerController {

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    DiscoveryClient discoveryClient;

    @GetMapping("{id}")
    public Map queryById(@PathVariable("id") String id){
      /*  String url = "http://localhost:8081/user/" + id;
        // 调用RestTemplate的getForObject方法，指定url地址和返回值类型
        Map user = restTemplate.getForObject(url, Map.class);
        return user;*/
       /* List<ServiceInstance> instances = discoveryClient.getInstances("user-service");
        ServiceInstance serviceInstance = instances.get(0);
        String host = serviceInstance.getHost();
        int port = serviceInstance.getPort();
        String url = serviceInstance.getUri().toString();
        Map user = restTemplate.getForObject(url + "/user/" + id, Map.class);
        return user;*/

       //ribbon实现
        String url = "http://user-service/user/"+id; //user-service 为服务名称
        Map user = restTemplate.getForObject(url , Map.class);
        return user;

    }
}
